Glad you brought this up. Just lately i've been thinking of getting some parts printed. Would like to know how good these prints are. Can they make a gear as strong as a normal technic gear? What about wear resistance or surface quality? I'm fairly sure the printer(s) at Lego can get close but how do I know that these guys can do the same? Guess i'm just gonna have to try em. Of course if lego themselves were to offer this service, that would be awesome!

Even the best can be made better, but most important is to be excellent to each other and party on dudes!!!!!!

The torson diff does look interesting. I wonder if it would be better to produce the parts with undersized holes so that they could be drilled out to a much rounder and more accurate hole. I must say if it turns out to be plausible I might not be a purist much longer

Edited by allanp, 07 May 2012 - 06:43 PM.

Even the best can be made better, but most important is to be excellent to each other and party on dudes!!!!!!

I'm mostly a purist I guess, but some custom pieces would be okay I think. After all, Lego set designers invent new pieces (though sometimes I feel that they overdo it).

I would only invent a piece if it could be used for more models than the current one, otherwise I would feel that it's only cheating and taking the easier root with a problem. If something can't be solved, maybe a rethinking/rebuilding of that complete sub-assembly is better solution than inventing a piece.

Its interesting how timing works out.. I was just looking at this site yesterday

An alternative to this site would be that of www.ponoko.com. They seem to offer the same services -3D printing, 2D laser cutting- but in a variety of materials. I imagine that the prices would be the same, but it depends on the volume, overall size, and material..

I have also been considering modeling my own pieces to order from one of these sites, but I haven't gotten over the idea that there would be a lot of remeasuring, redesigning, and reprinting that would be involved in getting a particular piece to fit perfectly with actual legos. For somebody who owns their own professional printer this is no big deal, but to have to order a new part, pay for shipping each version of that part, and wait in between orders, it simply does not make any sense. It is something worth looking into though

@ Allanp,

doesn't Lego use plastic injection molding for their Technic parts? Maybe they use printing in the same manner I described above until the designers are prepared to pay for the $100k (I believe this is the average/minimum price mentioned on the National Geographic special) molds..

"Legos can answer any and every of our problems if we know how to put them together"

custom parts is a very tempting notion, but, for me, part of builidng with lego is working within its limitations. those limitations must be overcome by ingenuity, and in that regard, lego teaches us to teach ourselves.

Speaking of Custom parts, I found out last night that it is very easy to make Black Bushings out of these

What exactly did you use? A hacksaw?

I've never really had the need for the black bushing -I don't put that much effort into the external design but rather I focus more on the function (that's not to say I don't try to make my MOC's beautiful) ... you manage to do both really well though!! I guess you could use it in your Vampire GT

"Legos can answer any and every of our problems if we know how to put them together"

I actually took an axle and stuck it into the bushing end and put the pin end through a liftarm almost up to the bush and used a new razor blade to press downward into a piece of wood and sheered through the hollow portion of the pin... I made 4 of them and they would work pretty well if you were in a pinch for a Black Bushing... I am still sitting on about 60 of the actual Black Bushings, so I didn't need any of them, but for some reason I just felt the need to experiment last night...

I think 3D printing would be a awesome idea as long as the colors are the same as lego's, and the sides are very exact, and the plastic mix being a good quality.
I have modified 1/4 size axle spacers out of a 8tooth gear or a 1/2 technic bushing. It works well on wormscrew gear applications.

Its interesting how timing works out.. I was just looking at this site yesterday

What a coincidence

Anyway, maybe I will order some parts to see what the quality is. If it's acceptable I will definitely try to model some of my own rims, or get the 8070 rims in a different material. Since the models for existing parts are already available, there will probably be a way to convert them to a usable format.

Paul Boratko, on 07 May 2012 - 11:22 PM, said:

Speaking of Custom parts, I found out last night that it is very easy to make Black Bushings out of these

That's actually a pretty good idea, if you really need the bushings. I just have about enough bushes, but definitely no surplus.

I actually took an axle and stuck it into the bushing end and put the pin end through a liftarm almost up to the bush and used a new razor blade to press downward into a piece of wood and sheered through the hollow portion of the pin... I made 4 of them and they would work pretty well if you were in a pinch for a Black Bushing... I am still sitting on about 60 of the actual Black Bushings, so I didn't need any of them, but for some reason I just felt the need to experiment last night...

That seems fairly safe

88high, on 08 May 2012 - 12:06 AM, said:

I think 3D printing would be a awesome idea as long as the colors are the same as lego's, and the sides are very exact, and the plastic mix being a good quality.
I have modified 1/4 size axle spacers out of a 8tooth gear or a 1/2 technic bushing. It works well on wormscrew gear applications.

I have long been wanting a solution for the worm gear spacing problem.. although I would prefer not having a solution at all than to cut some of my legos..

Gekke Ted, on 08 May 2012 - 08:13 AM, said:

That's actually a pretty good idea, if you really need the bushings. I just have about enough bushes, but definitely no surplus.

Likewise, although it may be useful for different colorschemes. However, the issue of finding the pin of the right color becomes more prevalent as you try to find the bushing of the right color!

Burf2000, on 08 May 2012 - 10:22 PM, said:

You could probably get them made up in metal by the Brick Machine shop if anyone wanted custom stuff!

If my memory is not failing me, I believe you can have pieces printed in different types of metal.. I'll have to check that.

"Legos can answer any and every of our problems if we know how to put them together"

Turns out that Shapeways is a spin-out of the lifestyle incubator of Royal Philips Electronics, located in Eindhoven (The Netherlands). Minimal shipping costs, lucky me.

I have ordered 6 of these, 2 in white, 2 in polished white and 2 in black. Production will take about 10 days. I am really looking forward to receiving these bad boys. Not that I actually need them, but still, I like to know what the overall quality, rigidity, etc is

doesn't Lego use plastic injection molding for their Technic parts? Maybe they use printing in the same manner I described above until the designers are prepared to pay for the $100k (I believe this is the average/minimum price mentioned on the National Geographic special) molds..

That's right. They use a 3D printer to make prototype parts then pay for the expensive mould to make the finalised mass produced versions. Remember the pictures of the prototypes for the unimog? You may have noticed that some of the new parts were an off white colour, typical of a 3D printed part. So I guess if Lego does it, it's fine for a purist to do it!

@Gekke Ted

I'm looking forward to seeing how good these parts are.

Edited by allanp, 09 May 2012 - 04:51 PM.

Even the best can be made better, but most important is to be excellent to each other and party on dudes!!!!!!

They use a 3D printer to make prototype parts....if Lego does it, it's fine for a purist to do it!

that's a pretty loose definition of purist. reminds me of a steven wright joke: "this is the hatchet which george washington used to chop down the cherry tree. i've had to replace the handle three times, and the head twice.... but it occupies the same space."

that's a pretty loose definition of purist. reminds me of a steven wright joke: "this is the hatchet which george washington used to chop down the cherry tree. i've had to replace the handle three times, and the head twice.... but it occupies the same space."

KEvron

It's as loose as a sausage in an alleyway but hey, I can only pester lego for the parts I want for so long

Even the best can be made better, but most important is to be excellent to each other and party on dudes!!!!!!